Changed in version 6.1.
Starts the balancer in a sharded cluster.
Starting in MongoDB 6.1, automatic chunk splitting is not performed. This is because of balancing policy improvements. Auto-splitting commands still exist, but do not perform an operation. For details, see Balancing Policy Changes.
In MongoDB versions earlier than 6.1,
sh.startBalancer()also enables auto-splitting for the sharded cluster.
The method can take the following options:ParameterTypeDescription
Optional. Time limit for enabling the balancer.
Defaults to 60000 milliseconds.
intervalintegerOptional. The frequency (in milliseconds) at which to check if a balancing round has started.
In earlier versions, the method waited for the balancing to start.